• Qntal I
— classX/gymnastics, 1992
• Qntal II
— classX/gymnastics, 1995
• Qntal III. Tristan und Isolde
— stars in the dark / noir records, 2002
• Qntal IV. Ozymandias
— e-wave / noir records, 2005
• Qntal V. Silver Swan
— e-wave / noir records, 2006
• Qntal VI. Translucida
— e-wave / noir records, 2007
• Qntal VII
— drakkar / metropolis records, 2014
• Qntal VIII. Nachtblume
— drakkar / metropolis records, 2018